- For subjects who developed liver metastases >/=6 months after completing treatment for primary CRC and having undergone surgery with curative intent for liver metastases, a second course of chemotherapy is not permitted unless initial adjuvant therapy consisted of fluoropyrimidine monotherapy. Subjects who received fluoropyrimidine alone must have received a second course of chemotherapy with fluoropyrimidine and either oxaliplatin or irinotecan or both, which should not exceed 9 months.For subjects with initial Stage I or II disease, no chemotherapy is required for a primary CRC lesion treated with surgery with curative intent. These subjects must receive chemotherapy for the treatment of liver metastases (which were also treated with surgery with curative intent), which must last at least 3 months, including a fluoropyrimidine and either oxaliplatin or irinotecan or both. The total course of chemotherapy should not exceed 9 months.